Method of bonding glass

Abstract

The invention provides methods of bonding glass using a tape that comprises an acrylic pressure-sensitive adhesive polymer. Embodiments provide the further steps of applying a silane to a surface of the tape prior to bonding the glass or applying a tape comprising an acrylic pressure-sensitive adhesive polymer and a silane.

1 . A method of bonding glass comprising the steps of: 
 providing a tape comprising an acrylic pressure-sensitive adhesive polymer;    applying a silane to a surface of the tape to form a bonding surface; and    contacting the bonding surface of the tape with glass to form a bonded glass, wherein the tape is the primary bonding means.    
     
     
         2 . The method of  claim 1  wherein the polymer has a weight average molecular weight of at least about 600,000.  
     
     
         3 . The method of  claim 1  wherein the tape is opaque and is colored black, white, or grey.  
     
     
         4 . The method of  claim 1  wherein the tape is a foam tape.  
     
     
         5 . The method of  claim 1  wherein the tape has a thickness of at least about 0.020 inches and less than about 0.125 inches.  
     
     
         6 . The method of  claim 1  wherein the tape is a composite tape comprising a core layer having a first side and a second side and an acrylic adhesive layer comprising an acrylic pressure-sensitive adhesive polymer on at least a portion of at least one side of said core layer.  
     
     
         7 . The method of  claim 1  wherein the core layer is selected from the group consisting of a foam, a metal film or foil, a polymeric scrim, a metal scrim, a mesh, a polymeric film, a woven material, and a nonwoven material.  
     
     
         8 . The method of  claim 7  wherein the core layer is an acrylic foam having a density of about 20 pounds/cubic foot to about 50 pounds/cubic foot.  
     
     
         9 . The method of  claim 7  wherein the core layer is an acrylic foam comprising glass microspheres, polymeric microspheres, or a combination thereof.  
     
     
         10 . The method of  claim 1  wherein the silane is wet when the bonding surface contacts the glass.  
     
     
         11 . The method of  claim 10  wherein the tape is movably positioned on the glass and then pressed in place.  
     
     
         12 . The method of  claim 1  wherein the silane is dried prior to contacting the bonding surface with the glass.  
     
     
         13 . The method of  claim 1  wherein the silane is provided in a solution of alcohol and water.  
     
     
         14 . The method of  claim 1  wherein the tape is bonded to a substrate before the step of applying a silane to a surface of the tape to form a bonding surface.  
     
     
         15 . The method of  claim 14  wherein the substrate is a window component other than a grooved sash.  
     
     
         16 . The method of  claim 1  wherein the tape further comprises elastomeric block copolymer-based adhesives.  
     
     
         17 . The method of  claim 7  wherein the core layer is selected from the group materials consisting of acrylic, polyolefin, polyurethane, rubber, silicone, or blends thereof.  
     
     
         18 . The method of  claim 1  further comprising the step of bonding the bonded glass to another substrate.  
     
     
         19 . The method of  claim 1  wherein the tape forms a permanent bond at room temperature.  
     
     
         20 . The method of  claim 1  wherein the tape forms a moisture stable bond at room temperature.  
     
     
         21 . The method of  claim 1  wherein the silane is selected from the group consisting of epoxy silane, vinyl silane, epoxysilane-modified melamine, amino silane, methacrylate silane, and combinations thereof.  
     
     
         22 . The method of  claim 1  wherein the silane comprises epoxy silane.  
     
     
         23 . The method of  claim 1  wherein the silane comprises 3-glycidoxypropyltrimethoxysilane.  
     
     
         24 . The method of  claim 1  wherein the glass has a hydrophilic coating.  
     
     
         25 . The method of  claim 24  wherein the coating comprises titania, silica, or a combination thereof.  
     
     
         26 . A method of bonding glass comprising the steps of: 
 providing a tape comprising a mixture of an acrylic pressure-sensitive adhesive polymer and a silane; and    contacting a bonding surface of the tape with glass to form a bonded glass, wherein the tape is the primary bonding means.    
     
     
         27 . The method of  claim 26  wherein the acrylic pressure-sensitive adhesive polymer comprises 2-ethylhexyl acrylate or isooctyl acrylate or a combination thereof, and at least about 6% by weight of acrylic acid based on the total weight of monomers in the acrylate polymer.  
     
     
         28 . The method of  claim 26  wherein the silane comprises an epoxy silane.  
     
     
         29 . A method of bonding glass comprising the steps of: 
 providing a tape comprising an acrylic pressure-sensitive adhesive polymer;    providing a glass substrate;    applying a silane to a surface of the glass to form a wet bonding surface; and    contacting the wet bonding surface with the tape to form a bonded glass, wherein the tape is the primary bonding means.    
     
     
         30 . The method of  claim 29  wherein the tape is a foam tape.  
     
     
         31 . The method of  claim 29  wherein the tape is a composite tape comprising a core layer having a first side and a second side and an acrylic adhesive layer comprising an acrylic pressure-sensitive adhesive polymer on at least a portion of at least one side of said core layer.  
     
     
         32 . The method of  claim 29  wherein the core layer is selected from the group consisting of a foam, a metal film or foil, a polymeric scrim, a metal scrim, a mesh, a polymeric film, a woven material, and a nonwoven material.  
     
     
         33 . The method of  claim 29  wherein the tape is bonded to a substrate before the step of applying the tape to the glass.  
     
     
         34 . The method of  claim 29  further comprising the step of bonding the bonded glass to another substrate.